Serial Peripheral Interface

(communications, hardware)

(SPI) A serial interface in which a master device supplies clock pulses to exchanges data serially with a slave over two data wires (Master-Slave and Slave-Master). This term probably originated with Motorola in about 1979 with their first all-in-one microcontroller.

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

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